Rock Identifier
Raw green beryl (likely aquamarine) (Beryl, Be₃Al₂Si₆O₁₈; blue-green variety is aquamarine) — gemstone
gemstone

Raw green beryl (likely aquamarine)

Beryl, Be₃Al₂Si₆O₁₈; blue-green variety is aquamarine

AI-generated identification · may be incorrect

Pale blue-green, translucent, vitreous luster, and prismatic hexagonal crystal habit; Mohs hardness 7.5–8, poor basal cleavage, specific gravity about 2.63–2.80. The rough, irregular surface and internal fractures are consistent with natural beryl, though color and clarity are insufficient for definitive identification…

Identified More gemstone
Explore Raw green beryl (likely aquamarine) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

Physical properties

Pale blue-green, translucent, vitreous luster, and prismatic hexagonal crystal habit; Mohs hardness 7.5–8, poor basal cleavage, specific gravity about 2.63–2.80. The rough, irregular surface and internal fractures are consistent with natural beryl, though color and clarity are insufficient for definitive identification.

Formation & geological history

Forms mainly in granitic pegmatites and hydrothermal cavities as late-stage hexagonal crystals, commonly during Precambrian to Mesozoic granite emplacement. Green color may reflect iron or, in some beryl, chromium/vanadium.

Uses & applications

Gem-quality aquamarine is faceted for jewelry; ordinary beryl is chiefly a collector specimen. Beryl is also an important historical source of beryllium for specialized alloys and aerospace materials.

Geological facts

Aquamarine is the blue-to-blue-green beryl variety; heating can reduce green tones and produce bluer gems. This specimen appears rough and heavily included rather than jewelry grade.

Field identification & locations

Look for a hexagonal prism, glassy luster, high hardness, and pale blue-green transparency; quartz is generally harder to scratch only slightly less and lacks beryl’s characteristic prism. Common sources include Brazil, Pakistan, Afghanistan, Madagascar, Nigeria, and Russia.